Device Comparisons

Compare devices side by side

Choose 2 to 4 devices, or open an editor-picked comparison.

Free Compare

Build your own comparison

Device type

Device 1 Device 2 Device 3 Device 4

Clear

Selected Devices

Acrel ADW310 vs ABB B21 312-100

Energy Meter

Acrel ADW310

Energy Meter

ABB B21 312-100

ABB B21 312-100 / 2CMA100155R1000

Decision point	Acrel ADW310	ABB B21 312-100

Install fit
Phase support	Single-phase, 220 V measurement context.	Single-phase, 220-240 V AC, 50/60 Hz.
Installation	Indoor distribution-box installation with an external split-core CT and AC 85-265 V auxiliary supply; qualified-electrician installation.	Indoor 2-module 35 mm DIN-rail direct-connected installation; IP20 meter for qualified-electrician panel wiring.
Measurement	Single-phase external-CT measurement of electrical parameters, harmonics, and forward/reverse active energy.	Direct-connected single-phase active/reactive energy and electrical-parameter metering with separate import/export registers.
Max current	100 A	65 A
Meter fit
Accuracy class	Class 1 active energy.	MID Class B / IEC Class 1 active energy; Class 2 reactive energy.
Current sensing	External split-core CT; official manual lists matched 10 mm and 16 mm aperture options.	Built-in direct current path rated 0.25-5(65) A; no external current transformer required.
Monitoring
Protocol	RS485 Modbus RTU / DL/T 645-07; optional Wi-Fi, 4G, and 470 MHz LoRa variants	RS-485 Modbus RTU / EQ Bus / S0 pulse outputs
Local API	Yes	Yes
Cloud dependency	No vendor cloud is required for the /C RS485 Modbus RTU variant; cloud or remote-service dependency varies with optional Wi-Fi, 4G, or LoRa system design.	No vendor cloud required; measurements are read locally over RS-485 Modbus RTU, EQ Bus, S0 pulse, or the front display.
Home Assistant	Yes	Yes
Solar fit
Solar import/export	Yes	Yes
Buying context
Price range	Unknown	EUR 420 gross list price from ABB Netherlands; net price, tax, stock, and regional distributor pricing vary.
Availability	Global Acrel product and quote route; wireless-module availability and certifications vary by market.	ABB global product and distributor channels; current Netherlands official channel listing verified, with regional stock and certifications varying.
Source check
Last verified	Sep 11, 2026	Oct 14, 2026
Product page	Official page	Official page
Documentation	Official docs	Official docs